<template>
    <div>
        <!-- 头部区域 -->
        <div style="height: 60px; line-height: 60px; background-color: white; margin-bottom: 2px; display: flex">
            <div style="width: 300px;">
            <img src="@/assets/logo.png" alt="" style="width: 40px;position: relative; top: 10px; left: 20px;">
            <span style="margin-left:25px; font-size: 24px;">图书管理系统</span>
            </div>

            <div style="flex: 1;text-align: right;padding-right: 20px">
                <el-dropdown size="medium">
                  <span class="el-dropdown-link" style="cursor:pointer">
                      {{admin.username}}<i class="el-icon-arrow-down el-icon--right"></i>
                  </span>
                    <el-dropdown-menu slot="dropdown" style="margin-bottom: -5px">
                        <el-dropdown-item><div style="width: 50px;text-align: center" @click="logout">退出</div></el-dropdown-item>
                    </el-dropdown-menu>
                </el-dropdown>
            </div>
        </div>

        <!-- 侧边栏和主体 -->
        <div style="display: flex;">
            <!-- 侧边栏导航 -->
            <div style="width: 200px; min-height: calc(100vh - 62px); overflow: hidden; margin-right: 2px; background-color: white;">
                <el-menu :default-active="$route.path" router class="el-menu-demo" >
                    <el-menu-item index="/">
                        <i class="el-icon-eleme"></i>
                        <span>首页</span>
                    </el-menu-item>
                    <el-submenu index="user">
                        <template slot="title">
                            <i class="el-icon-more"></i>
                            <span>会员管理</span>
                        </template>
                        <el-menu-item index="/addUser">会员添加</el-menu-item>
                        <el-menu-item index="/userList">会员列表</el-menu-item>
                    </el-submenu>

                    <el-submenu index="admin">
                        <template slot="title">
                            <i class="el-icon-user"></i>
                            <span>管理员管理</span>
                        </template>
                        <el-menu-item index="/addAdmin">管理员添加</el-menu-item>
                        <el-menu-item index="/adminList">管理员列表</el-menu-item>
                    </el-submenu>

                    <el-submenu index="category">
                        <template slot="title">
                            <i class="el-icon-s-operation"></i>
                            <span>图书分类管理</span>
                        </template>
                        <el-menu-item index="/addCategory">图书分类添加</el-menu-item>
                        <el-menu-item index="/categoryList">图书分类列表</el-menu-item>
                    </el-submenu>

                    <el-submenu index="book">
                        <template slot="title">
                            <i class="el-icon-notebook-1"></i>
                            <span>图书管理</span>
                        </template>
                        <el-menu-item index="/addBook">图书添加</el-menu-item>
                        <el-menu-item index="/bookList">图书列表</el-menu-item>
                    </el-submenu>
                </el-menu>
            </div>
            <!-- 主体布局 -->
            <div style="flex: 1;background-color: white; padding: 10px;">
                <router-view/>
            </div>
        </div>
    </div>
</template>

<script>
    import Cookies from 'js-cookie'
    export default {
        name: "Layout.vue",
        data() {
            return {
                admin: Cookies.get('admin') ? JSON.parse(Cookies.get('admin')) : {}
            }
        },
        methods: {
            logout() {
                //    清楚浏览器用户数据
                Cookies.remove('admin')
                this.$router.push('/login')
            }
        }
    }
</script>

<style scoped>

</style>